Demountable antenna



FIG. 1 is a perspective view of a demountable antenna showing my new design;

FIG. 2 is a front elevational view; and

FIG. 3 is a bottom plan view;

This is a division of design application Ser. No. 190,554, filed Sept. 24, 1980. 

The ornamental design for a demountable antenna, as shown and described. 